You ask what is the use of classification, arrangement, systemization? I answer you: order and simplification are the first steps toward the mastery of a subject—the actual enemy is the unknown.
In Chapter 5, we reviewed the various ways in which an information need can be articulated, focusing on its expression via some form of query. And in Chapter 6, we considered ways in which the response can be articulated, focusing on its expression as a set of search results. Together, these two elements lie at the heart of the search experience, defining and shaping the information seeking dialogue. In this chapter, we take that dialogue to a further level of sophistication, in the form of faceted search.